45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
function AppIdService() {
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initAppIdService();
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}
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function initAppIdService() {
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AppIdService.prototype.getAppId = function (callback) {
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if (!callback || typeof callback !== 'function') {
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throw 'callback function required';
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}
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makeAndGetAppId('appId', callback);
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};
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AppIdService.prototype.getAnonymousAppId = function (callback) {
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if (!callback || typeof callback !== 'function') {
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throw 'callback function required';
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}
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makeAndGetAppId('anonymousAppId', callback);
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};
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function makeAndGetAppId(key, callback) {
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chrome.storage.local.get(key, function (obj) {
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if (obj && obj[key]) {
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callback(obj[key]);
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return;
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}
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var setObj = {};
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setObj[key] = newGuid();
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chrome.storage.local.set(setObj, function () {
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callback(setObj[key]);
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});
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});
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}
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// ref: http://stackoverflow.com/a/2117523/1090359
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function newGuid() {
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return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
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var r = Math.random() * 16 | 0, v = c === 'x' ? r : (r & 0x3 | 0x8);
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return v.toString(16);
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});
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}
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}
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